Ethereal Breakdown

Ethereal Breakdown is a 32-level megawad for Doom 64, first released on October 28, 2022. It was originally announced in late 2021 as a Doom 64 25th anniversary community map jam project, as a tribute to the original game's release in 1997, and drew a wide variety of mappers, including some who had worked on a previous community project for the game, Community Chest 64.

Ethereal Breakdown includes a number of differences from traditional Doom 64 mappacks, such as a hub map where most of the levels may be chosen and played, a partial new soundtrack composed exclusively for the project, and a system whereby the new artifacts are required to unlock and complete the final map of the game.

Ethereal Breakdown received an honorable mention at the 2022 Cacowards.

Custom actors
The Demon Keys have been replaced by three new artifacts: the Artifact of Spirit, the Artifact of Body and the Artifact of Mind. Besides powering up the Unmaker as the originals do, these powerups are necessary in order to be able to access the final map. Additionally, they are the only items the player will keep throughout the game, as completing each map resets the player's inventory.

Levels

 * MAP01: Hall of Mirage (hub map) by Immorpher, Jetx_121 and Neighy Winny
 * (fun map) by Jetx_121
 * (fun map) by United VirusX
 * (fun map) by HeadshotTAS
 * by Kyller92 and United VirusX
 * by hardcore_gamer
 * by HeadshotTAS
 * by Jetx_121
 * by United VirusX
 * by Cody Richeson (Koko Ricky) and United VirusX
 * by Jetx_121
 * by Immorpher
 * by Agony Zenith
 * by hardcore_gamer
 * by HeadshotTAS
 * by United VirusX
 * by BlueThunder
 * by DeXiaZ, JS Graham and Immorpher
 * by United VirusX
 * by Agony Zenith
 * by the_kovic
 * by thexgiddoomerx
 * by Atomic Frog and Immorpher
 * by Chris Harriman (Impboy), Jdagenet and United VirusX
 * by DeXiaZ and raindom12
 * by Agony Zenith
 * by Kevin Martins (Velvetic) and Agony Zenith
 * by Velvetic and Agony Zenith
 * by Velvetic and Agony Zenith
 * by scwiba
 * by DeXiaZ and AFADoomer
 * by Jetx_121, Neigh Winny, and Styd051
 * MAP00: Fragmented Memories (credits) by Rusty Dusty and Immorpher

Soundtrack

 * MAP01: "Ends of Sanity" by Immorpher and "Depths of Madness" by Kenji Yamamoto and Immorpher
 * MAP02: "Zoness" by Hajime Wakai, Koji Kondo and Immorpher
 * MAP03: "The Reaping Comes" by Aubrey Hodges and Chris Harriman (Impboy)
 * MAP04: "Other Side of Madness" by Aubrey Hodges
 * MAP05: "Mentality Extermination" by Aubrey Hodges, Impboy and Immorpher
 * MAP06: "Chrystalline Chaos" by Aubrey Hodges
 * MAP07: "Hellistatic" by Aubrey Hodges
 * MAP08: "Silent Agony" by JetX_121
 * MAP09: "Lullaby of the Drowned" by Minako Hamano and Immorpher
 * MAP10: "Relentless Coil" by Aubrey Hodges
 * MAP11: "Orate Pro Morte" by JetX_121
 * MAP12: "Dessiccation" by Immorpher
 * MAP13: "Tortured Transmission" by Aubrey Hodges
 * MAP14: "Other Side of Madness" by Aubrey Hodges
 * MAP15: "Dark Echo" by Aubrey Hodges
 * MAP16: "Blood Red Shadows" by Aubrey Hodges
 * MAP17: "Warped Hive" by Aubrey Hodges
 * MAP18: "Stalker" by Lee Jackson and Immorpher
 * MAP19: "Lamentation of the Forgotten" by Aubrey Hodges
 * MAP20: "Aspects of the Vile" by Aubrey Hodges
 * MAP21: "Blood Massacre" by Aubrey Hodges, Impboy and Immorpher
 * MAP22: "Perfect Hate" by Aubrey Hodges
 * MAP23: "Castle of the Damned" by Aubrey Hodges and Immorpher
 * MAP24: "The Suffering Darkness" by Aubrey Hodges and Impboy
 * MAP25: "Macabre Passage" by Resident Evil 1 & Immorpher
 * MAP26: "I Can't Stop" by Punch Deck (on Remaster), "The Thing" by Ennio Morricone and Immorpher (elsewhere)
 * MAP27: "MUSCOG" by Neigh Winny
 * MAP28: "Madness of the Forsaken" (from Quake 64) by Aubrey Hodges and Immorpher
 * MAP29: "Pulsating Machine" by JetX_121
 * MAP30: "MUSTRI" by Neigh Winny
 * MAP31: "Demon Rap" by Bobby Prince and Immorpher
 * MAP32: "Beneath Marbas" by JetX_121 and Immorpher
 * MAP00: "Fragmented Worlds" by Immorpher